Apparatus for cold rolling axle journals



April 19, 1938. o. J. HORGER ET AL 2,114,979

APPARATUS FOR COLD ROLLING AXLE JOURNALS Original Filed Jan. 4, 1957THE/E 'HTTOENEYSQ Patented Apr. 19, 1938 Oscar J. Horger and Harry R.Neifert, Canton, Ohio, as'sighors to The Timken Roller Bearing Company,Canton, Ohio, a corporation of Ohio Original application January 4,1937, Serial No. 118,961. Divided and this application June 16, 1937,Serial N0. 148,430

4 Claims.

Our invention relates to an apparatus for burnishing or cold rolling thejournal portions of axles and shafts. The principal object of theinvention is to adapt such apparatus for work on journals of difierentdiameters. Another ob-' ject is to prevent canting or skewing of suchapparatus with respect to the axis of the work piece. The inventionconsists in the parts and in the combinations and arrangements of partshereinafter described and claimed.

In the accompanying drawing wherein like reference numerals indicatelike parts wherever they occur,

Fig. 1 is a plan view of an apparatus embodying our invention togetherwith a portion of the journal of an axle or shaft;

Fig. 2 is a side elevation of said device with the axle or work pieceshown in cross section;

Fig. 3 is partly an end elevation and partly a vertical cross section onthe line 3-3 of Fig. 2;

Fig. 4 is a vertical cross section on the line 4-4 of Fig. 2;

Fig. 5 is a perspective view of the guide block which guides andsteadies the apparatus; and

Fig. 6 is a perspective view of the block which supports the screw foradjustably supporting the steady block shown in Fig. 5.

The subject matter claimed herein is divided out of our copendingapplication Serial No. 118,961 filed January 4, 1937, for patent forApparatus for cold rolling axle journals, to which reference is herebymade for a specific description of portions of the apparatus not claimedherein but claimed in said application. 35 The frame of the apparatusillustrated in the accompanying drawing comprises a base memberconsisting of two heavy side plates I firmly secured together by bolts 2but spaced apart by suitable spacing members 3 far enough to accommodateWork rollers 4 between them. The top sides of these plates have a recess5 therein large enough to receive the journal 6 of the axle or otherworkpiece. Two work rolls 4 are located between said side plates at therespective lower corners thereof and are rotatably mounted thereon.

Firmly secured to the upper portion of one end of the base member is anupwardly extending support 1 which, in the construction illustrated;

has a third work roller 9 rotatably mounted thereon equidistant from thetwo Work rollers 4 in the base member. The apparatus also includes meanscollectively indicated by the reference numeral ID, for transmittingpressure through the throat latch and its work roller to the journal orother workpiece, all as more fully described.

in our said copending application.

Rigidly fixed to the base member and projecting from one end thereof isa mounting bar ll of suitable size to fit slidably in the tool post of alathe. Rigidly fixed to the other end of the base member and projectingtherefrom in the opposite direction is a steady or guiding bar l2 whichis in substantial alinement with the mounting bar II and in suchposition that their common longitudinal axis extends through or close tothe axis of the journal or other workpiece mounted on the lathe centers.

The guiding bar I2 is flat-sided or of other non-circular section and issupported by a vertically adjustable steady block I3 which has a widevertical groove l4 in each end. The grooved ends of the steady blockstraddle or fit slidably around vertical posts or supports l5 which aresecured to the carriage [6 of the lathe, as by cap screws II extendingthrough foot flanges [8 on the posts into the lathe carriage. The steadyblock [3 has a deep groove I9 which extends across its upper face inposition to receive the guiding bar l2 which has a sliding fit thereinbut is prevented by the walls thereof from tilting.

The steady block I3 is supported on the upper end of a vertical screw 20which is threaded through a vertical hole 2! in a block 22 which hasgrooved ends which straddle the vertical supporting posts l5. Each ofthe vertical posts has a series of perforations 23 therein and throughone pair of these perforations extend cap screws 24 which engagethreaded holes 25 provided therefor in the grooved ends of saidsupporting block and secure it firmly. By turning the vertical screw 20,the steady block 13 may be raised or lowered for relatively fineadjustment of the height of the steady block; and for coarseradjustment, the supporting block 22 itself 7 can be fixed at differentheights by shifting the cap screws to another pair of perforations.

'In practice, the mounting bar of our apparatus is inserted in the toolpost of the lathe and the steady bar diametrically opposite saidmounting bar lies in the deep groove of the steady block and with thejournal in the recess 5 of the base member. As both the mounting bar andthe steady bar have sliding fits, the base member,

together with all parts secured thereto, is free to float in a planecrosswise of the journal which is being burnished and thereby equalizethe pressure of the three work rollers thereon; but the steady restkeeps such base member from canting from its position in a plane atright angles to the axis of the lathe centers. 7

What we claim is: I

1. An attachment for lathes which comprises a frame and work rollersmounted therein, said attachment comprising a mounting bar adapted tofitslidably in the tool post of a lathe, a second bar diametricallyopposite said mounting bar, and a device attachable to said lathe forslidably supporting said second bar and for preventing tilting of theapparatus transversely of its sliding movement, said second bar restingon said supporting devices.

2. An attachmentfor lathes which comprises a frame and work rollersmounted therein, said attachment comprising a mounting bar adapted tofit slidably in the tool post of a lathe, a second bar diametricallyopposite said mounting bar, and a guiding and supporting device for saidsecond bar comprising spaced apart members attachable to the lathecarriage on opposite sides of said second bar, a block slidable betweensaid members and having a groove therein adapted to slidably supportsaid second bar, and a support for said block adjustably supported bysaid members.

3. An attachment for lathes which comprises a frame and work rollersmounted therein, said attachment comprising a mounting bar adapted tofit slidably in the tool post of alathe, a second bar diametricallyopposite said mounting bar, and a guiding and supporting device for saidsecond bar comprising spaced apart members attachable to the lathecarriage on opposite sides of said second bar, a block slidable betweensaid members and having a groove therein adapted to slidably supportsaid second bar, and a support for said block adjustably supported bysaid members, said support comprising a second block slidable betweensaid members below said first mentioned block, means for securing saidsecond block against movement, and a screw threaded through saidsecondblock and supporting said first mentioned block.

4. A lathe attachment comprising a framework having a mounting barprojecting outwardly from one side of said framework in one directionand adapted to fit slidably in the tool post of a lathe, a steady barprojecting outwardly from the opposite side of said frameworks in theopposite direction in alinement with said mounting bar, a Work tool onsaid framework, and means for supporting said steady bar and preventingcanting thereof from a plane at right angles to the axis of the lathe,said steady bar resting on said supporting means.

OSCAR J. HORGER. HARRY R. NEIFERT.

